Dark Banshee

Information (Spoilers)
Dark Banshee is an undead immortal that never was alive nor dead. Because of this, it can't be killed nor resurrected from undead. It is immune to anything. It can fly and has magical power and dark energy. Due to its "birth", hates Krystalman and only wants to kill him. The creature was born from magic, human organic material, as well as residual energy from Krystalman from his fight with the witch in his Transylvanian Adventure.